Time Reversal

Time reversal may refer to:

  • In physics, T-symmetry - the study of thermodynamics and the symmetry of certain physical laws where the concept of time is reversed — i.e. where a mirror (reverse) transformation is applied to a forward direction time state.
  • Time Reversal Signal Processing, a signal processing technique popular in acoustics, and currently being applied to electromagnetics, that results from the reversal in time of a system's response signal
  • Time travel, theorised and speculative concepts about travelling physically through time

Famous quotes containing the words time and/or reversal:

    “Surely tis by faith we are upheld thro such trials—justice will be meted in time to those who fill soft places and malign men who perform heroic duties—”
    —Elizabeth Blair Lee (1818–?)

    “Perversity depends on reversal and substitution.”
    —Mason Cooley (b. 1927)